Treat Vue.mixin as components (#137)

* Treat Vue.mixin as components

* Add unit test for `Vue.mixin`

Author: armano2

lib/utils/index.js

@@ -382,7 +382,7 @@ module.exports = {
       callee.object.type === 'Identifier' &&
       callee.object.name === 'Vue' &&
       callee.property.type === 'Identifier' &&
-      callee.property.name === 'component' &&
+      (callee.property.name === 'component' || callee.property.name === 'mixin') &&
       node.arguments.length &&
       node.arguments.slice(-1)[0].type === 'ObjectExpression'
 

tests/lib/utils/vue-component.js

@@ -120,6 +120,12 @@ function invalidTests (ext) {
       parserOptions,
       errors: [makeError(1)]
     },
+    {
+      filename: `test.${ext}`,
+      code: `Vue.mixin({})`,
+      parserOptions,
+      errors: [makeError(1)]
+    },
     {
       filename: `test.${ext}`,
       code: `